Big Rock Bay is a Bay located in Manitoulin, Ontario and has an elevation of 178 meters.

• Latitude: 45° 57' 20'' North   (decimal: 45.9555555)
• Longitude: 81° 17' 9'' West   (decimal: -81.2858333)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Ontario
• Elevation: 178 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: Big Rock Bay
• GPS Coordinate Locator Map: Big Rock Bay Lat/Long